The route currently begins at Clear Lake from Soda Bay Road and heads south.

The planned segment west along Soda Bay Road to Lakeport remains unconstructed.

This portion of Soda Bay Road is currently Lake County Route 502.

[3] Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage.

[1] Segments that remain unconstructed or have been relinquished to local control may be omitted.